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Error Code

Thermador Washer E23

E23 indicates water has been detected in the base of the washer — an anti-leak response.

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Reviewed by Marcus Cole · Last reviewed August 1, 2026

Error guide

Code overview

Marcus Cole Written by Marcus Cole Appliance Repair Content Specialist Published August 1, 2026 Updated August 12, 2026 Technically reviewed August 1, 2026
Error code E23
Appliance Washing Machine
Washing Machine service reference
Quick answer

E23 indicates water has been detected in the base of the washer — an anti-leak response.

Model compatibility: Thermador reuses codes across series and model years, so E23 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.

Plain language

What this code means

The E23 code means the washer’s leak-protection system detected water in the base. Like an anti-flood trigger, it stops operation to prevent water damage.

Signs

Symptoms you may notice

Cycle halts and E23 appears

Possible water under the machine

Machine will not continue normally

Why it happens

Possible causes

A minor internal leak reaching the base

A loose or failing hose connection

Residual water from a previous issue

Before you call

Safe checks you can make

These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.

Check for visible water under or behind the machine

Confirm the machine is level and stable

Inspect accessible hose connections for obvious drips

Important safety warning. E23 relates to water inside the appliance near electrical components. Avoid internal disassembly and have a technician find the leak source.

Please avoid

What not to attempt

  • Do not tip the machine to drain it
  • Do not remove internal panels or electrical parts
  • Do not bypass the leak-protection system
Get help

When to call a technician

If E23 appears, or you notice water under the washer, book a diagnosis promptly to locate and fix the leak safely.

FAQ

Frequently asked questions

References

Sources & references

  • Appliance user manual — safety and error indicators
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